Ok guys... What are the common causes of a P0700. The Predator programmer I have won't display more detail on Allison codes. I had been driving normally today in a rural area when the service engine soon lamp popped on. Upon returning home I read the codes and saw the P0700.

A couple of winters ago this same truck produced a P0700 after a cold start at near zero degrees F. I serviced the Allison with an internal and external spin filters plus fluid. That fixed the SES lamp, but now it's back, in warmer weather.

Any ideas? Thx